Nothing destroys your love of a hobby, even one that you are passionately (or even obsessively) dedicated to, like making it your job. I LOVE riding bikes but all the BS of working in software is preferable to trying to support my love of bikes within the broader industry of bikes. The word "amateur" has negative connotations, but should really be interpreted as "not your primary pay cheque", not that you suck.
The negative connotations is a more recent development:
> The meaning "one who cultivates and participates (in something) but does not pursue it professionally or with an eye to gain" (as opposed to professional) is from 1786; often with disparaging suggestions of "dabbler, dilettante," but not in athletics, where the disparagement shaded the professional, at least formerly. As an adjective, by 1838.
* https://www.etymonline.com/word/amateur
It comes from the from the Latin amatorem, "lover": someone who does something not for any practical reason, but simply for the enjoyment / love of the activity. How well one does it does not necessarily come into consideration, as long as there is enjoyment.